Scavenging and turbocharging

Q. How scavenge fire can be avoided? What are the safety devices incorporated in an engine for scavenge f ire.

Ans: Step to avoid scavenge fire:

• Proper maintenance of the fuel injection equipments, piston rings as per maker instruction.

• Not to over load the engine.

• Periodically cleaning and inspection of scavenge trunk.

• Regular draining of scavenge trunk.

• Monitor the under piston scavenge space temperature

Safety devices for scavenge trunk:

• Scavenge trunk relief valve.

• High temperature sensing device with alarm.

• Fixed fire extinguishing system.

• Sight glass on scavenge drain line.

• Non-return valve.

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